ABAP Select data from SAP table SGS_S_OBLO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SGS_S_OBLO table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to SGS_S_OBLO. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the SGS_S_OBLO table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_SGS_S_OBLO TYPE STANDARD TABLE OF SGS_S_OBLO,
      WA_SGS_S_OBLO TYPE SGS_S_OBLO,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <SGS_S_OBLO> TYPE SGS_S_OBLO.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SGS_S_OBLO.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SGS_S_OBLO
  INTO TABLE IT_SGS_S_OBLO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SGS_S_OBLO
*  INTO TABLE @DATA(IT_SGS_S_OBLO2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_SGS_S_OBLO INDEX 1 INTO DATA(WA_SGS_S_OBLO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SGS_S_OBLO ASSIGNING <SGS_S_OBLO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SGS_S_OBLO>-NO_ROWMARK = 1.
<SGS_S_OBLO>-NO_TOOLBAR = 1.
<SGS_S_OBLO>-NO_TITLE = 1.
<SGS_S_OBLO>-GRID_TITLE = 1.
<SGS_S_OBLO>-SEL_MODE = 1.

ENDLOOP.

LOOP AT IT_SGS_S_OBLO INTO WA_SGS_S_OBLO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SGS_S_OBLO-BOX_FNAME, sy-vline,
  WA_SGS_S_OBLO-SGL_CLK_HD, sy-vline,
  WA_SGS_S_OBLO-SMALLTITLE, sy-vline,
  WA_SGS_S_OBLO-NO_HGRIDLN, sy-vline,
  WA_SGS_S_OBLO-NO_VGRIDLN, sy-vline,
  WA_SGS_S_OBLO-NO_HEADERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SGS_S_OBLO you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_SGS_S_OBLO TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_SGS_S_OBLO INTO WA_SGS_S_OBLO.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SGS_S_OBLO_STR, 
NO_ROWMARK TYPE STRING,
NO_TOOLBAR TYPE STRING,
NO_TITLE TYPE STRING,
GRID_TITLE TYPE STRING,
SEL_MODE TYPE STRING,
BOX_FNAME TYPE STRING,
SGL_CLK_HD TYPE STRING,
SMALLTITLE TYPE STRING,
NO_HGRIDLN TYPE STRING,
NO_VGRIDLN TYPE STRING,
NO_HEADERS TYPE STRING,
NO_MERGING TYPE STRING,
CWIDTH_OPT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SGS_S_OBLO_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_SGS_S_OBLO_STR-NO_ROWMARK sy-vline 
WA_SGS_S_OBLO_STR-NO_TOOLBAR sy-vline 
WA_SGS_S_OBLO_STR-NO_TITLE sy-vline 
WA_SGS_S_OBLO_STR-GRID_TITLE sy-vline 
WA_SGS_S_OBLO_STR-SEL_MODE sy-vline 
WA_SGS_S_OBLO_STR-BOX_FNAME sy-vline 
WA_SGS_S_OBLO_STR-SGL_CLK_HD sy-vline 
WA_SGS_S_OBLO_STR-SMALLTITLE sy-vline 
WA_SGS_S_OBLO_STR-NO_HGRIDLN sy-vline 
WA_SGS_S_OBLO_STR-NO_VGRIDLN sy-vline 
WA_SGS_S_OBLO_STR-NO_HEADERS sy-vline 
WA_SGS_S_OBLO_STR-NO_MERGING sy-vline 
WA_SGS_S_OBLO_STR-CWIDTH_OPT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.